(-9+2i)-(-12+4i)=

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Solution for (-9+2i)-(-12+4i)= equation:


Simplifying
(-9 + 2i) + -1(-12 + 4i) = 0

Remove parenthesis around (-9 + 2i)
-9 + 2i + -1(-12 + 4i) = 0
-9 + 2i + (-12 * -1 + 4i * -1) = 0
-9 + 2i + (12 + -4i) = 0

Reorder the terms:
-9 + 12 + 2i + -4i = 0

Combine like terms: -9 + 12 = 3
3 + 2i + -4i = 0

Combine like terms: 2i + -4i = -2i
3 + -2i = 0

Solving
3 + -2i = 0

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -2i = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2i = 0 + -3
-2i = 0 + -3

Combine like terms: 0 + -3 = -3
-2i = -3

Divide each side by '-2'.
i = 1.5

Simplifying
i = 1.5

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